Home / 11,825.99-16,320.57-6,520.78

Finding the Fourth Proportional to 11,825.99, 16,320.57 and 6,520.78

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Solution

The fourth proportional to 11,825.99, 16,320.57 and 6,520.78 is: 8,999.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,825.99 : 16,320.57 = 6,520.78 : x
  2. Step 2: Convert to fraction form
    11,825.99/16,320.57 = 6,520.78/x
  3. Step 3: Cross multiply
    11,825.99x = 16,320.57 × 6,520.78
  4. Step 4: Simplify right side
    11,825.99x = 106,422,846.44
  5. Step 5: Solve for x
    x = 106,422,846.44/11,825.99
  6. Step 6: Final answer
    x = 8,999.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.